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dybincka [34]
3 years ago
8

-18x + 20y = 12 -9x + 10y = 6 X=what Y=what

Mathematics
1 answer:
Maksim231197 [3]3 years ago
6 0

Answer:

x is 2.25 and y is 1

Step-by-step explanation:

-18*2.25 = -8

20*1 = 20

-8 + 20 = 12

-9*2.25 = 4

10*1 = 10

-4 + 10 = 6

so

X = 2.25

Y = 1

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Vladimir79 [104]
Answer is 0

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8 0
3 years ago
Emily is thinking of a number, which she calls n. She finds 1/4 of the number and subtracts 3. Write an expression that represen
ExtremeBDS [4]

Answer:

1/4n - 3

Step-by-step explanation:

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3 years ago
Which formula decribe the following geometric equence? Remember that n repreent the term number. 2, 6, 18, 54,. An = 3 · 2 n - 1
Goryan [66]

For the given geometric progression, the nth term of the given GP is A_n=2.3^{n-1}.

Option (C) is correct.

What is the Geometric Progression?

Geometric Progression (GP) is a type of sequence in mathematics in which each succeeding term is produced by multiplying each preceding term by a fixed number known as a common ratio. This progression is also known as a pattern-following geometric sequence of numbers.

The given sequence is 2, 6, 18, 54

here the first term(a) = 2 and the common ratio(r) = 6/2 =3

Then by using the formula for the nth term of a GP, we get

                               A_n=ar^{n-1}\\\\A_n=2.3^{n-1}

Hence the nth term of the given GP is A_n=2.3^{n-1}.

To learn more about Geometric progression, visit:

brainly.com/question/12006112

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1 year ago
How to solve 2+(3-2×2)×1
UkoKoshka [18]

Answer:

Step-by-step explanation: First figure what’s in the parentheses. (3-2*2) wanna do 2*2 That’s 4 then (3-4) = -1. 2+(-1)*1. Then multiply -1 by 1 which is -1. Then 2+(-1)= 1

4 0
3 years ago
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